SMT8585-05H03 LF - BeStar Acoustic Components

SPECIFICATION 

FOR ELECTRO-MAGNET TRANSDUCER 

TOTAL PAGE 08 www.be-star.com RoHS 

Customer 

Model Name 

SMT8585-05H03 LF 

Customer P/N 

Product No. 

050229 

Date 

20 Mar. 09 

Issue No. 

BS/TET01.568A 

Page 

01 of 08 

Issue Date 

09/03/20 

Approval: 

1.Characteristics 

2.Dimension 

3.Reliability Test 

4.Surface Mounting Condition 

5.Soldering Pattern 

6.Tape on Reel Packing 

7.Notice 

8.History change record 

Drawn by 

Checked by 

Approved by 

Customer approved 

魏奉玲 

徐波 

陶红仲 

BESTAR ELECTRONICS INDUSTRY CO.,LTD 

No.199 HuangHe West Road.New district,ChangZhou,JiangSu Province,P.R.China 

Tel: +86 519 88222567 Fax: +86 519 88222551 

E-mail:wu@be-star.com http://www.be-star.com

This print and information there in are proprietary to Bestar Electronics Industry Co., Ltd. 

and shall not be used in whole or in part without its written content 

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1. Characteristics 

1.1 Features 

1. SMD;thinner , smaller size 

2. High S.P.L.; and clear sound 

3. Reflowable;RoHS complant 

4. Tape & Reel supply 

5. Minimum quantity (one reel): 1000 pcs. 

1.2 Electrical and Mechanical Characteristics 

No. Item Specifications 

1 Rated Voltage 5Vo-p 

2 Operating Voltage 4...6 Vo-p 

3 Current Max.80mA 

4 Sound Output (at 10cm) Min.85dB 

5 Rated Frequency 2731Hz 

6 Coil Resistance 32± 5 ohm 

7 Operating Temp. -40...+85°C 

8 Storage Temp. -40...+85°C 

9 Weight Max 0.5g 

※Current/Sound Output:value applying rated voltage 

1.3 Test method: 

1.31.Recommended Circuit 

(2731Hz,1/2 duty,square wave) 

the following are examples of externally driven circuits. 

1.32.Standard text Fixture 

No reaction in space with in 400mm in all direction 

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Square 

signal 

generator 

red 

black 

1.0K 

Ec+ 

8050 buzzer 

400mm 

Sounder 

100mm 

C 

B 

B 

A 

Date: 

09/03/20 

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Rev. 

09/03/20 

Date 

魏奉玲 

Drawn 

Note 

Checked by: 

Approved by: 

徐波 

陶红仲 

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www.be-star.com wu@be-star.com 

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Transducer 

DRG NO: BS/TET01.568A Page:2 of 8 

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1.4 Frequency Response(Square wave 5Vo-p 10cm) 

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100 

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90 

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Sound Pressure Level (dB) 

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70 

60 

200 400 500 600 700 800 900 1000 2000 3000 

2.Dimension 

4-1.6 

+ 

3.0 

4000 5000 

Frequency (Hz) 

8.5 

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8.5 

C 

Tolerance: 0.2mm 

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Rev. 

09/03/20 

Date 

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Drawn 

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Checked by: 

Approved by: 

徐波 

陶红仲 

Transducer 

A 

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3.Reliability Test 

3.1 High temp. storage life test 

Temperature 

+85°C 

Duration 

240hrs 

3.2 Low temp. storage life test 

Temperature 

-40°C 

Duration 

240hrs 

3.3 Life test in normal temperature 

Power supply 

Rated voltage 

Duration 

96hrs 

3.4 Temperature shock test 

Cycles 14 

-40 C 

30min 

+25 C 

15min 

3.5 Humidity cycle test 

Cycles 10 

25 C 90-95% RH 

+85 C 

30min 

+25 C 

15min 

65 C 90-95% RH 

10h 1h 12h 1h 

3.6 High temp. life test 

Temperature 

+85°C 

Duration 

96hrs 

3.7 Low temp. life test 

Temperature 

-20°C 

Duration 

96hrs 

All these tests above should be measured after leaving normal temperature for 4hrs. 

3.8 Vibration Test 

Vibration Frequency 

50~100~50Hz 

Time 

15min 

Acceleration 

5g 

Direction 

x.y &z 2h (total 6hrs) 

3.9 Drop test 

Height 

150cm(drop to concrete floor) 

Direction 

one time in each 6 planes(total of 6 times) 

3.10Solderability 

Temperature of soldering pot 250°C ± 5 

Duration 

2 ± 0.5sec 

3.11Pin lead strength 

Force 

10N 

Duration 

10 ± 1sec 

Notice: All specification must be satisfied in this condition except SPL. SPL shall be 83dB or more. 

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Drawn by: 

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Rev. 

09/03/20 

Date 

魏奉玲 

Drawn 

Note 

Checked by: 

Approved by: 

徐波 

陶红仲 

Transducer 

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4.Surface Mounting Condition 

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In automated mounting of The SMD Sound Transducers on printed circuit boards,any bending,expanding and 

pulling forces or shocks against the SMD Sound Transducers shall be kept minimum to preven them from 

electrical failures and mechanical damages of the devices. 

Soldering(Reflow) 

(1)Solderings of The SMD Sound Transducers shall conform to the soldering conditions in the individual 

specifications. 

(2)The SMD Sound Transducers are designed for"Reflow Solderings" 

(3)In the reflow solderings,too high soldering temperatures and too large tempearture gradient such as rapid 

heating or cooling may cause electrical failures and mechanical damages of the devices. 

Follwing soldering conditions are recommend;Refer to Fig.1 

Temperature [ ℃] 

300 

250 

200 

150 

100 

50 

0 

Temperature profile for a lead-free reflow process 

min.190℃ 

ramp up to 

150℃ 

min.3k/s 

0 50 100 

min.300s 

min.110s 

Fig. 1 Recommended soldering Temperature-Time profile (Reflow soldering) 

2.1 

T(solid)min.217℃ 

150 200 250 300 350 

time [s] 

5.0 

max.260 ℃ 

2.1 

min.40s 

max.90s 

max.255℃ 

ramp down 

from T(solid) 

min.6k/s 

Notice: All specification must be satisfied in this condition except SPL. SPL shall be 83dB or more. 

5.Soldering Pattern 

400 

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4-R1.0 

5.0 

2.1 

B 

2.1 

B 

4-Solder Pads 

Date: 

Drawn by: 

09/03/20 

魏奉玲 


A 

A 

Rev. 

09/03/20 

Date 

魏奉玲 

Drawn 

Note 

Checked by: 

Approved by: 

徐波 

陶红仲 

Transducer 

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6. Tape on Reel Packing 

6.1 packing drawing 

Dimensions of carrier tape 

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4.0 0.1 

2.0 0.1 

0 

1.5 +0.1 

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1.75±0.1 

7.5±0.1 

B-B 

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A 

A 

16 0.3 

9.0±0.1 

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0.3 0.05 



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9.0 0.1 

A-A 

Dimensions of reel 

13 0.2 

Max. 5°c 

12.0 0.1 

3.2 0.1 

22.4Max. 

330 Max 

Diameter 

B 

Min. 1.5 

The cover film peel strength force 0.1-0.7N 

The cover film peel speed 300mm/min. 

Components 

Cover Film 

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C 

240~280 

B 

1.6±0.2 

16.4 

100 0.5 

Empty 

Trailer160-200 

400-560 Leader 

B 

Date: 

Drawn by: 

09/03/20 

魏奉玲 


A 

A 

Rev. 

09/03/20 

Date 

魏奉玲 

Drawn 

Note 

Checked by: 

Approved by: 

徐波 

陶红仲 

Transducer 

A 

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label about order info 

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6.2 packing quantity 

6.2.1 1000pcs/reel 

6.2.2 5reels/carton 

6.2.3 5000 pcs/carton in total 

6.2.4 carton size 38x28x37cm 

6.2.5 12cartons/tray 

6.2.6 tray size 85x77x74cm 

7.Notice 

7.1 The products mustn't be washed 

7.2 Storage Condition 

The products should be stored in the room ,where the temperature/humidity is stable. And 

avoid such places where there are large temperature changes. Please store the products at 

the following conditions: 

Temperature: -10 to + 40 C Humidity: 15 to 85% R.H. 

7.3 Expire Date on Storage 

Expire date (Shelf life) of the products is six months after deliveried under the conditions of a 

sealed and an unopened package. Please use the products within six months after deliveried. 

If you store the products for a long time (more than six months), use carefully because the 

products may be degraded in the solderability and/or rusty.Please confirm solderability and 

characteristics for the products regularly. 

7.4 Notice on Product Storage 

(1) Please do not store the products in a chemical atmosphere (Acids, Alkali, Bases, Organic 

gas, Sulfides and so on), because the characteristics may be reduced at quality, and/or be d- 

egraded in the solderability due to the storage in a chemical atmosphere. 

(2) Please use the products immediately after the package is opened, because the characteristics 

may be reduced at quality, and/or be degraded in the solderability due to storage under 

the poor condition. 

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Rev. 

09/03/20 

Date 

魏奉玲 

Drawn 

Note 

Date: 

Drawn by: 

Checked by: 

Approved by: 

09/03/20 

魏奉玲 

徐波 

陶红仲 


Transducer 

A 

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8. History change record 

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version 

No. 

Before 

Change Items 

After 

Date Drawn Approved 

G A 

09/03/20 魏奉玲陶红仲 

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Rev. 

09/03/20 

Date 

魏奉玲 

Drawn 

Note 

Date: 

Drawn by: 

Checked by: 

Approved by: 

09/03/20 

魏奉玲 

徐波 

陶红仲 


Transducer 

A 

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SMT8585-05H03 LF - BeStar Acoustic Components

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